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Subject: Re: Hashing rules

Author: Uri Blass

Date: 08:49:21 04/06/03

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On April 06, 2003 at 11:36:19, Rudolf Posch wrote:

>>Wouldn't it be a good idea to hash the 50 move counter when it aproach say 45?
>
>My chess engine RDChess (and many others as I think) stop hashing positions when
>the 50 move count reaches a certain limit (RDChess has not a 50 move count but a
>100 ply count and stops hashing at a ply count of 81).
>
>That is because without folding in the 100 ply count into the hash key one would
>get wrong position values for positions with differing 100 ply counts.


Why do you need to stop hashing?
You can use hashing only for order of moves and not for pruning.

Uri



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